Closure for containers



y 2, 1933- A. B. DODGE 1,907,254

CLOSURE FOR CONTAINERS Filed March 21, 1932 Patented May 2, 1933 ARTHUR,IB. DODGELOF, LAN CASTER, PENNSYLVANIA cLosUiaE non CONTAINERSApplication filed March 21, 1932. Serial No. 600,334.

My invention relates to closures for containers and more particularly toclosures for bottles jars and like containers in which a liquid or airtight closure is essential.

The principal object of the invention is to provide a closure cap whichcan be readily and quickly applied to or removed from the container.

Another object of the invention is to provide means whereby a closurecap can be conveniently drawn into sealing engagement with the mouth ofa container by a slight turning movement, and thereafter automaticallylocked by a continuation of such rotary movement without materiallydecreasing the sealing pressure.

Other objects of the invention will be apparent from the followingdescription.

In the accompanying drawing wherein I have illustrated a preferredembodiment of the invention;

Fig. 1 is a vertical section through the cap of my invention, the bottlebeing shown in elevation.

Fig. 2 is a cross-sectional View of my invention taken on the line 22 ofFig. 1.

Fig. 8 is a cross-sectional view of the bottle of my invention. taken onthe line 33 of Fig. 1.

Fig. is an elevational view of the cap of my invention, showing thedisposition of lugs therein.

Fig. 5 is a bottom plan view of my cap.

Referring more particularly to the drawing 1 denotes the neck of abottle, the mouth 2 of which is provided with a plurality of segmentalperipheral locking flanges 3, 3' and 3", separated by interveningopenings or channels a. The bot-tom of these flanges are formed withinclined cam faces, each of which cam face is formed with a plurality ofregularly spaced notches or indentations 5.

The closure member or cap 6 for bottle neck 1 of any suitable materialsuch as bakelite or metal comprises top 7, a rim or flange 8 and lockinglugs 9, 9 and S), projecting inwardly from the inner wall of rim 8. A

resilient disk shaped cork washer 10 is preferably inserted in the capfor air and water tight sealing engagement with the mouth of the bottleneck. The locking lugs and openings or channels 4 are equal distancesapart, that is, are so spaced that when the cap is being placed over themouth of neck 1, the lugs will register with and pass downwardly throughthe openings or channels 4, thus permit-ting the cap to be freely movedto and from its seat on the bottle neck. A limited turning movement ofthe cap in a clockwise directioncauses the locking lugs to engagebeneath the locking flanges and to ride over the inclined indentedbottom faces-thereof thus pulling the cap downwardly-against the mouthof the bottle neck with gradually in creasing intensity, and sealingefl'ect. This movement will be continued'until one of the lugs 9 dropsinto a locking notch or indentation 5, and where an extremely tight"seal is required the cap ispreferably rotated until the lug has passedthrough several indentations. l

One objection to cap closures of the general construction just described'has been due to the fact that the downward pullof the cap caused byrotating the locking lugs over the bottom inclined faces of theperipheral locking flanges is suddenly released or lessened when thelocking lugs 9 drop into-the notches or indentations 5, withconsequentdanger of breaking the hermetic seal between the inner face ofthe top of the cap and the mouthof the bottle neck. This objection isovercome in the presentclosure by locating the notches 5 in such amanner that no more than one of the three locking lugs will drop intolocking position at the same time, while the other two lugs will rideover and remain in engagement with the smooth portions ofthe peripheralflanges extending between adjacent notches. Thus corresponding notches'5 on 99 the respective locking flanges 3,8 and 3" are progressivelyadvanced relatively "to each other, as will be better understood fromthe enlarged sectional view, Figure 3, in which thethree locking flangesare shown of equal size, two of the flanges being formed with fourequally spaced notches andthe remaining flange with five. Thenotches 5of flange 3-are' arranged symmetrically w-ith respect to'theaxis of this9 flange, whereas the notches of flanges 3' and 3" are progressivelyadvanced in a clockwise direction as viewed in Figure 3, with respect toeach other and to the notches of flange 3. As the lugs 9, 9 and 9" areequally spaced with respect to each other about the inner periphery ofthe rim 8 of cap 6, it follows that these lugs will alternately engagethe notches 5 of the respective locking flanges when the cap is rotated,thus providing for twelve locking positions. However, but one lug at atime engages within a notch 5, and consequently the greater portion ofthe cap is at all times subjected to maximum pulling and sealingpressure, which is communicated to some extent to the lug which is inlooking engagement with its notch. This action is possible due to theresiliency of the cork washer which permits of a slight tilting movementof the cap during the closure operation.

What I claim is:

1. The combination with a bottle having a neck portion, of a closuremember comprising a cap seated upon said neck portion, a plurality ofinwardly extending spaced lugs on" said cap, a corresponding pluralityof spaced sectional flanges, surrounding said neck portion, inclinedbottom surfaces for said flanges, cooperating with said lugs in drawingthe cap tightly against said neck, and a group of equally spacedindentations in the bottom surface of each of said flanges, the spacingof each indentation of one group from the corresponding indentation ofthe adjacent group being diflerent from the spacing of adjacent lugs, toprohibit simultaneous interlocking of more than one lug with oneindentation. 1

2..The combination with a bottle having a neck portion, of a closuremember comprising a cap seated upon said neck portion, three inwardlyextending equally spaced lugs on said cap, three, horizontally alignedand equally spaced sectional flanges surrounding said neck portion,inclined bottom surfaces for said flanges cooperating with said lugs indrawing the cap tightly against said neck when the cap is rotated,andgroups of indentations for each of said bottom surfaces, the spacingof each indentation of one group from the corresponding indentation ofthe adjacent group being different from the spacing of adjacent lugs, toprohibit simultaneousinterlocking of more than one lug with oneindentation and to permit of consecutive interlocking of all of saidlugs with said indentations.

3. The combination with a bottle having a neck portion, of a closuremember comprising a cap 'seated'upon said neck portion, a plurality ofinwardly extending equally spaced lugs on said cap, a correspondingplurality of equally spaced sectional flanges surrounding said neckportion, inclined bottom surfaces for said flanges cooperating with sa dlugs in drawing the cap tightly against said neck, and a group ofindentations in the bottom surface of each of said flanges, theindentations of each group being equally spaced from each other, and thespacing of each indentation of one group from the correspondlngindentation of the adjacent group being different from the spacing ofadjacent lugs, to prohibit simultaneous interlocking of more than onelug with one indentation.

In testimony Whereo-f'I aflix my signature.

ARTHUR B. DODGE,

